Stored cross-site scripting in Firefly III - CVE-2019-14670
Published: August 7, 2019
Vulnerability identifier: #VU19951
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P/U:Clear
CVE-ID: CVE-2019-14670
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: James Cole
Affected software:
Firefly III
Firefly III
Detailed vulnerability description
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data in the bill name field. A remote attacker can send a specially crafted request, which contains javascript code in it and execute arbitrary HTML and script code during rule-from-bill creation in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
How to mitigate CVE-2019-14670
Install update from vendor's website.